Well BLAKE is actually more difficult in the main comic line.
the Blake that found the stick that turned Blake into Thor was a COPY of a guy who Jane foster marries later in life (completely brain farting his name) ANYWAY Blake was given false memories and made lame to teach Thor Humility. so basically it really wasn't a secret Identity. eventually Blake was erased from everyones memories and place into limbo after Thor had learned humility.
after a Ragnarok Thor returns to Earth to face Destroyer and gets blasted BAD mortally scorched. To HEAL he was placed into Jake Olsen and Jake was an emt who could access Thor's memories AND Blakes memories.

In the Ultimates Universe, Balder took on the identity of Dr. Blake who was a psychologist.

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Originally Posted by Bruce Malone

So i don't really follow thor in the comics but does he have a true secret identity? I know that donald blake is technically his secret identity but he wasn't even featured in the first film and was more like an easter egg in how they used his name.